| /* |
| * Copyright 2013 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm.h" |
| |
| #include "Resources.h" |
| #include "SkCanvas.h" |
| #include "SkGradientShader.h" |
| #include "SkStream.h" |
| #include "SkTextBlob.h" |
| #include "SkTypeface.h" |
| |
| namespace skiagm { |
| |
| static void draw_blob(SkCanvas* canvas, const SkTextBlob* blob, const SkPaint& skPaint, |
| const SkRect& clipRect) { |
| SkPaint clipHairline; |
| clipHairline.setColor(SK_ColorWHITE); |
| clipHairline.setStyle(SkPaint::kStroke_Style); |
| |
| SkPaint paint(skPaint); |
| canvas->save(); |
| canvas->drawRect(clipRect, clipHairline); |
| paint.setAlpha(0x20); |
| canvas->drawTextBlob(blob, 0, 0, paint); |
| canvas->clipRect(clipRect); |
| paint.setAlpha(0xFF); |
| canvas->drawTextBlob(blob, 0, 0, paint); |
| canvas->restore(); |
| } |
| |
| class MixedTextBlobsGM : public GM { |
| public: |
| MixedTextBlobsGM() { } |
| |
| protected: |
| void onOnceBeforeDraw() override { |
| sk_tool_utils::emoji_typeface(&fEmojiTypeface); |
| fEmojiText = sk_tool_utils::emoji_sample_text(); |
| fReallyBigATypeface.reset(GetResourceAsTypeface("/fonts/ReallyBigA.ttf")); |
| |
| SkTextBlobBuilder builder; |
| |
| // make textblob |
| // Text so large we draw as paths |
| SkPaint paint; |
| paint.setTextSize(385); |
| const char* text = "O"; |
| sk_tool_utils::set_portable_typeface(&paint); |
| |
| SkRect bounds; |
| paint.measureText(text, strlen(text), &bounds); |
| |
| SkScalar yOffset = bounds.height(); |
| sk_tool_utils::add_to_text_blob(&builder, text, paint, 10, yOffset); |
| SkScalar corruptedAx = bounds.width(); |
| SkScalar corruptedAy = yOffset; |
| |
| const SkScalar boundsHalfWidth = bounds.width() * SK_ScalarHalf; |
| const SkScalar boundsHalfHeight = bounds.height() * SK_ScalarHalf; |
| |
| SkScalar xOffset = boundsHalfWidth; |
| yOffset = boundsHalfHeight; |
| |
| // LCD |
| paint.setTextSize(32); |
| text = "LCD!!!!!"; |
| paint.setAntiAlias(true); |
| paint.setSubpixelText(true); |
| paint.setLCDRenderText(true); |
| paint.measureText(text, strlen(text), &bounds); |
| sk_tool_utils::add_to_text_blob(&builder, text, paint, xOffset - bounds.width() * 0.25f, |
| yOffset - bounds.height() * 0.5f); |
| yOffset += bounds.height(); |
| |
| // color emoji |
| if (fEmojiTypeface) { |
| paint.setAntiAlias(false); |
| paint.setSubpixelText(false); |
| paint.setLCDRenderText(false); |
| paint.setTypeface(fEmojiTypeface); |
| text = fEmojiText; |
| paint.measureText(text, strlen(text), &bounds); |
| sk_tool_utils::add_to_text_blob(&builder, text, paint, xOffset - bounds.width() * 0.3f, |
| yOffset); |
| } |
| |
| // Corrupted font |
| paint.setTextSize(12); |
| text = "aA"; |
| paint.setTypeface(fReallyBigATypeface); |
| sk_tool_utils::add_to_text_blob(&builder, text, paint, corruptedAx, corruptedAy); |
| fBlob.reset(builder.build()); |
| } |
| |
| SkString onShortName() override { |
| SkString name("mixedtextblobs"); |
| name.append(sk_tool_utils::platform_os_emoji()); |
| return name; |
| } |
| |
| SkISize onISize() override { |
| return SkISize::Make(kWidth, kHeight); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| |
| canvas->drawColor(sk_tool_utils::color_to_565(SK_ColorGRAY)); |
| |
| SkPaint paint; |
| |
| // setup work needed to draw text with different clips |
| paint.setColor(SK_ColorBLACK); |
| canvas->translate(10, 40); |
| |
| paint.setTextSize(40); |
| |
| // compute the bounds of the text and setup some clips |
| SkRect bounds = fBlob->bounds(); |
| |
| const SkScalar boundsHalfWidth = bounds.width() * SK_ScalarHalf; |
| const SkScalar boundsHalfHeight = bounds.height() * SK_ScalarHalf; |
| const SkScalar boundsQuarterWidth = boundsHalfWidth * SK_ScalarHalf; |
| const SkScalar boundsQuarterHeight = boundsHalfHeight * SK_ScalarHalf; |
| |
| SkRect upperLeftClip = SkRect::MakeXYWH(bounds.left(), bounds.top(), |
| boundsHalfWidth, boundsHalfHeight); |
| SkRect lowerRightClip = SkRect::MakeXYWH(bounds.centerX(), bounds.centerY(), |
| boundsHalfWidth, boundsHalfHeight); |
| SkRect interiorClip = bounds; |
| interiorClip.inset(boundsQuarterWidth, boundsQuarterHeight); |
| |
| const SkRect clipRects[] = { bounds, upperLeftClip, lowerRightClip, interiorClip}; |
| |
| size_t count = sizeof(clipRects) / sizeof(SkRect); |
| for (size_t x = 0; x < count; ++x) { |
| draw_blob(canvas, fBlob, paint, clipRects[x]); |
| if (x == (count >> 1) - 1) { |
| canvas->translate(SkScalarFloorToScalar(bounds.width() + SkIntToScalar(25)), |
| -(x * SkScalarFloorToScalar(bounds.height() + |
| SkIntToScalar(25)))); |
| } else { |
| canvas->translate(0, SkScalarFloorToScalar(bounds.height() + SkIntToScalar(25))); |
| } |
| } |
| } |
| |
| private: |
| SkAutoTUnref<SkTypeface> fEmojiTypeface; |
| SkAutoTUnref<SkTypeface> fReallyBigATypeface; |
| const char* fEmojiText; |
| SkAutoTUnref<const SkTextBlob> fBlob; |
| |
| static const int kWidth = 1250; |
| static const int kHeight = 700; |
| |
| typedef GM INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM( return SkNEW(MixedTextBlobsGM); ) |
| } |